Nissan pathfinder runs very slowly ?

[123canicani]

I have a 2001 nissan pathfinder se 5 speed,but when I went as 60 mph began to shake and lose power and would not run over 30 mhp. now turns on normally but do not run over 30 mph and not more than 2000 rpm. I put a new mass air flow sensor (MAF) but the problem is the same.''Sorry English translator google ''

[Slaxl]

i'm not sure if this will help bro - but have you changed your fuel filter? I had problems with acceleration and you would feel the vehicle lose power and kinda stutter. Changed the fuel filter and trust me it really made a difference. As though the engine was starving for fuel.

[123canicani]

i did it,but is same problemnew spark plugs,air filter,gas filter,maf sensor.thanks anyway''

its the same problem than this

http://www.youtube.com/watch?v=ytkEN55w808

[sicwitit]

the video looks more like a vacume leak.

one way to test for a vacum leak, get a bottle of brake cleaner, open hood, turn on engine, spray brake cleaner on hoses, manifold nipples, gaskets, and anything after the MAF that has air in it before it gets to the combustion chamber. if you have a leak, the brake cleaner will make your engine idol go up for a sec. then you know where your leak is.....if you have a leak that is..

Oh and be sure to use the straw to better aim your spray, that comes with the bottle.

post your results.